Was Francisco's lack of jealousy in "Atlas Shrugged" rational or realistic?

In Part 3, Chapter 5 of Ayn Rand's "Atlas Shrugged," Francisco tells Dagny, "...No matter what you feel for [John Galt], it will not change what you feel for me, and it won't be treason to either, because it comes from the same root, it's the same payment in answer to the same values..." Is that a rational and realistic response? Given his love for Dagny, shouldn't Francisco (and Hank) have been more disappointed in their loss of Dagny, and perhaps even jealous of John Galt? Is a person wrong to feel bitter disappointment or jealousy over a lost love?